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Merge 10.3 into 10.4

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Marko Mäkelä
2018-11-06 16:24:16 +02:00
parent 563efeceec df563e0c03
commit 074c684099
394 changed files with 24300 additions and 10755 deletions
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6
sql/opt_range.cc
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@ -3247,6 +3247,12 @@ bool calculate_cond_selectivity_for_table(THD *thd, TABLE *table, Item **cond)
}
if (quick && (quick->get_type() == QUICK_SELECT_I::QS_TYPE_ROR_UNION ||
quick->get_type() == QUICK_SELECT_I::QS_TYPE_INDEX_MERGE))
{
table->cond_selectivity*= (quick->records/table_records);
}
bitmap_union(used_fields, &handled_columns);
/* Check if we can improve selectivity estimates by using sampling */